Definition
Conversion rate measures the % of visitors who complete an action. In ads it's often conversions / clicks; on-site it can be conversions / sessions.
Formula
CVR = conversions / clicks (or sessions)
Example
If you had 50 purchases from 2,000 clicks, click-based CVR = 50 / 2,000 = 2.5%.
How to use it
- Use click-based CVR when you're bidding on clicks (CPC).
- Use session-based CVR when you're optimizing landing pages and on-site funnels.
Common mistakes
- Mixing click-based and session-based CVR.
- Optimizing CVR by narrowing targeting and losing scale.
Measured as
CVR = conversions / clicks (or sessions)
Misused when
- Mixing click-based and session-based CVR.
- Optimizing CVR by narrowing targeting and losing scale.
Operator takeaway
- Use click-based CVR when you're bidding on clicks (CPC).
- Use session-based CVR when you're optimizing landing pages and on-site funnels.
- Use CVR (Conversion Rate) only inside a stable attribution rule, conversion definition, and time window so campaign comparisons stay honest.
- If performance changes, check whether the metric moved for a real business reason or because the measurement setup changed underneath you.
Next decision
- Quantify the impact with Break-even CVR Calculator if you need to turn the definition into an operating assumption.
- Read CVR (Conversion Rate): definition, formula, and how to calculate if the decision depends on interpretation, policy, or trade-offs beyond the raw formula.
Where to use this on MetricKit
Calculators
- Break-even CVR Calculator: Compute the CVR required to break even (and hit a target) given CPM, CTR, AOV, and contribution margin.
- Paid Ads Funnel Calculator: Model CPM -> CTR -> CVR to estimate CPC, CPA, ROAS, and profit per 1,000 impressions (with margin and variable costs).
- Incrementality Lift Calculator: Estimate incremental conversions, incremental ROAS, and incremental profit from a holdout test.
- Max CPC Calculator: Compute break-even and target CPC (and optional CPM) from CVR, AOV, and contribution margin assumptions.
- Break-even CPM Calculator: Compute break-even and target CPM from CTR, CVR, AOV, and contribution margin assumptions.
Guides
- CVR (Conversion Rate): definition, formula, and how to calculate: CVR explained: what conversion rate means, how to calculate it correctly, and how to improve it without sacrificing scale.
- Break-even CVR: required conversion rate at a given CPM and CTR: A practical guide to break-even CVR: set landing page CVR targets from CPM, CTR, AOV, and margin, then prioritize post-click fixes.
- Paid ads funnel: CPM, CTR, CVR -> CPC, CPA, ROAS (with profit): A practical guide to the paid ads funnel: how CPM, CTR, and CVR drive CPC, CPA, ROAS, and profit - with formulas and common pitfalls.
- CTR (Click-Through Rate): definition, formula, and how to improve: CTR explained: what click-through rate is, how to calculate it, and how to improve CTR without sacrificing conversion quality.
- CPC Formula: How to Calculate Cost Per Click + Example: Learn the CPC formula, how to calculate cost per click, what affects CPC, and how CPC connects to CTR, CVR, CPA, and bidding.